linux-kernel - Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

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Message-ID: <20150410110328.GC25921@red-moon>
Date:	Fri, 10 Apr 2015 12:03:28 +0100
From:	Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:	Kumar Gala <galak@...eaurora.org>
Cc:	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"arm@...nel.org" <arm@...nel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Catalin Marinas <Catalin.Marinas@....com>,
	Will Deacon <Will.Deacon@....com>,
	"abhimany@...eaurora.org" <abhimany@...eaurora.org>
Subject: Re: [RFC PATCH 0/5] Add smp booting support for Qualcomm ARMv8 SoCs

On Thu, Apr 09, 2015 at 06:37:06PM +0100, Kumar Gala wrote:
> This patch set adds support for SMP boot on the MSM8x16 family of Qualcomm SoCs.
> 
> To support SMP on the MSM8x16 SoCs we need to add ARMv8/64-bit SCM interfaces to
> setup the boot/release addresses for the secondary CPUs.  In addition we need
> a uniquie set of cpu ops.  I'm aware the desired methods for booting secondary
> CPUs is either via spintable or PSCI.  However, these SoCs are shipping with a
> firmware that does not support those methods.

Why ? Do not tell me you were not aware of those standard methods,
because I can't believe you.

If there were additional features to add to spin-table and PSCI,
you were, you are and you will always be welcome to debate them.

There is no justification for this patchset, honestly.

Lorenzo
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